Saw-sharpening machine.



PATBNTED MAR. 19. 1907.

J. D. MGA'ULAY.

4 SAW SHARPBNING MACHINE.

APPLICATION FILED 0013.7, 1905. l 3 SHEETS-SHEET l.

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ATTORNEYS No. 847,804. -PATENTED MAR. 19, 1907.

l J. D. MCAULAY.

SAW SHARPBNING MACHINE.

APPLICATION FILED OCT.7 1905.

3 SHEETS-.SHEET 2.

W/r/vEssEs: )NVE/won Arrow/v5l 'rus Noms Perales :o.,' wasmrmrsm. n. c.

1216.842804. "PATBNTED lMAR. 19, 1907.

- y J. D. MGAULAY.

SAW SHARPENING MACHINE.

APPLIGATION'FILED 0CT.7. 1905.

3 SHEETS-SHEET 8.

A TTOHNE y will@ STATES MEET @FFE SAW-SHARPENNG MACHINE.

Specification of Letters Patent.

Patented March 19, 190'?.

Application filed October 7, 1905. Serial No. 281,757.

To @ZZ w/z/om, zit may concern:

Be it known that I, JOHN D. MOAULAY, a subject of the King of Great Britain, and a resident of Baddeck, in the Province of Nova Scotia and Dominion of Canada, have invented a new and Improved Saw-Sharpening Machine, oitl which the following is a full, clear, and exact description.

rlhis invention relates to saw-sharpening machines, and it consists, substantially, in the details oit construction and combinations of parts hereinafter more particularly described, and pointed out in the claims.

The invention has reference more especially to saw-sharpening machines O1c the type embodying one or more hand-driven reciprocatory tools; and one of the principal objects oi the invention is to provide suoi a structure oi an embodiment to overcome numerous disadvantages and objections encountered in the use oi" many other structures of the kind hitherto devised.

A further obj ect is to provide a saw-sharpening machine which is simple in construction and comparatively inexpensive to manufacture, besides being adapted for the sharpening of the teeth of both handsaws and crosscut-saws, as well as rip-saws and circular saws.

A si ill further object ot the invention is to provide a saw-sharpening machine of the type specified which is thoroughly effective and reliable for its purposes and which possesses the capacity for long and repeated service.

The above and additional objects are attained by means substantially such as are illustrated in the accompanying drawings, in which Figure 1 is a side view of a saw-sharpening machine embodying my improvements. Fig. 2 is a top plan view of the machine, the iull lines indicating the position to which the sharpening devices proper are carried for the purpose otl sharpening the teeth oi either rip or circular saws and the dotted lines indicat- Ging one of the positions. to which said devices are carried for the purpose of sharpening the teeth of either hand or crosscut saws. Figis an end elevation oi the machine, indicating more clearly the carrier employed for the saws and the guide for the iiles't'or sharpening teeth of the saws.

Fig. 4 is a part-sectional detail view oi' a device employed for regulating the depth of the cut or the files used for sharpening the saws. Fig. 5 is a plan. view in detail oil a detachable support for one or more holders for flat files, and Fig. 6 is a detail view of a holder for flat files shown in the preceding view.

Before proceeding with a more detailed description it may be stated that in the form of my improvements herein shown I employ a suitable supporting-stand for the machine, the latter comprising special means for carrying the saw to be sharpened and special actuating devices for moving the saw to bring the teeth thereof successively into proper position to be sharpened. Speciallyconstructed reciprocatory sharpening devices proper are employed, together with a special guide therefor, in association with a specially-constructed horiZontally-shiitable supporti ng-frame for said guide, the organization of the severally-mentioned elements being such that the sharpening devices proper may be quickly shifted and set to diiferent positions relatively to the supporting-stand of the machine for enabling the sharpening of the teeth of saws of the different kinds referred to to be effected.

Reference being had to the drawings by the designating characters thereon, 1 represents the upper portion of a supporting-stand for my improved saw-sharpening machine, which is provided at the upper portion thereof with an outer transversely-extending bracket 2, on the upper edge 3 of which is slidably supported the lower edge of the body member 4 of a carrier for a saw to be sharpened, said inemb er being of the desired length and other dimensions, as well as fiat on the outer surface, of a forwardly-projecting portion 5 thereof, as indicated. The said lower edge 3 of the body member 4 of this carrier is produced by recessing the member for its length, and which leaves the same with a pendent portion 6, the lower edge of which is provided with a series of teeth 8, thus practically making of this member of the carrier a rack-bar. Said member is provided at the upper inner edge thereof with a lcpgitudinally-eXtending rib 9, (see Fig. 1,) which is engaged by suitable clips 10, secured, by

IOO

means of screws 11, to the upper surface of a strip 12 of suitable length and other dimensions, which is rigid with and constitutes practically a part of the hereinbe'forementioned supporting-stand 1 of the structure. The construction of the saw-carrier referred to is completed or made up of a member 121, substantially of equal length to the body member 4 of the carrier and disposed before the said forwardly-projecting portion 5 ol2 said body member by means of suitable outwardly and downwardly curved brackets 13, the inner ends ot which are secured in any suitable manner to the upper part or' thev body member 4, and the outer or 'free ends of which are provided with screws 14, the inner ends of which are rotatably connected with the member 12a, said screws being provided with thumb-nuts 15, by which the member 12a may be adjusted with reference to the said forwardly-projecting portieri 5 of the body member 4 of the carrier for the purpose of enabling a saw 16 (indicated in dotted lines in Fig. 1) to be properly placed within the carrier to be sharpened in a manner presently to be explained. The said strip 12 is formed in the inner or rearward face thereoiE with suitable sockets 17, disposed a suitable distance apart, and between the upper and lower walls of which are mounted suitable pins 18, on which are loosely held the 'liorward ends of parallel rearwardly-extending members 19 and 20, constituting practically a horizontally-shifting supp erung-frame for a slide for the sharpening devices proper, to be presently explained, said parallel members 19 and 2O being formed with corresponding longitudinal slots 21 (see Fig. 1) and provided at 22 with short chains 23, carrying pins 24 at the free ends thereo'l", the function of which will also be presently explained.

r1`he inner or rearward ends of' the parallel members 19 and 2O are free, and supported between said members is a slide 25, having secured to the opposite longer sides thereof suitable clips 26, through which the said par-- allel members extend, as shown in Figs. 1 and 2. The said slide 25 is cut out for the greater part of the length thereof to form a longitudinal slot 27 therein of proper width, and mounted upon the slide at the inner or rearward end thereof, at one side of the slot 27, are suitable bearing-plates 28 and 29 for the shaft 30 of a large gear-wheel 31, the teeth. of which are in mesh with the teeth of a pinion 32, also supported by said bearing-plates 28 and '29, the spindle 33 thereof also carrying another gear-wheel 34, smaller than the aforesaid gear-wheel 31, and the teeth of which engage with another pinion 35, and thel spindle 36 of this latter pinion being rigid with one arm of a crank 87, suitably mounted within the slot 27 at the sides thereof and. with which is movably associated the inner or rearward end ot a pitman or connecting rod 38, the outer or liorward end of which has movable connection at 3) with a reciprocatory block 4l), having upper and lower plates and 40h, the. `parallel longer edges of which have working support upon flat plates 41, disposed in suitable manner upon the upper surface of the slide 25 lior a suitable extent of the said slot 27 therein. The. upper surface of the said parallel niembers 1) and 2() and the said slide 25 are llush with each other, by which when reciprocatory motion is imparted lo the said block ll() the movement ol the latter will be (rue, thereby securing accuracy el'Y iresulis in the sharpening ol saws, as will be lully underood from the description to lollow llxtending through lhe block 4() and the said upper and lower plates 40 and 40') thereol', nearest the outer o1"l"orwa1d end ol` said block, is a post 42, to which is pivoted a( 4S the lower end of a screw-bolt Vifi, the threaded portion ol'A which extends Jihrough a. proper opening (not shown) iherelior in a` longiiudinally-disposed beam 45, the said threaded portion ol 'this screw-bolt, above the. said beam 45, being provided wiih a lhumb-nut 4G, by which and the nut 47'on (he boli at l'he under side ol the beam the lati er ma;Y be adjusted verif ally with respect to ihe slide 25, such adjusiment being desirable under some conditions ol'V use o'lt the machine. 'l`he l'orward portion oiE die said beam l5 is held within a rest 46 therefor` (see liig. 1.) and working through thel bottom ol this rest is a screw 47, carrying at ihe upper end (hereof, within the sides ol" the rest, a plate 4S, upon which ihe said forward portion ol the. beam is direcilyY supporled, it being nolcd lha( the screw 47'y is provided wiih a milled operating-nut 4), worliing between upper and lower bearings 5() and 5l, surrmmding the openings 'l'or the screw 47") in a` snpporiingframe 52 for boih the said screw and the said rest 4(3). VBy turning the screw in one direction or lthe other the l'orw ard end o'l' the beam 45 will be raised or lowered accordingl as will be understood, and :wcording to the height to which the plate. 4S is adjusted will be ihe depth ofV cul ol'V the liles l'or sharpening the saws, as will be understood l'rom the descriilition 1o lollow. 'lhc rest lo also con sti'rutes a guide l'or the beam l5 in the reciprocatory movements el' Ithe latter, and sup ported at the rear end (in suitable manner) ol the upper plaie 40" ol the reciilnoca(or block 4() is a screw 452i, carrying a nui 5l, on which is mounted the lower end oi' a spring .55, Iihe upper end oll which has bearing against the under side oll the rearward or inner end portion of the beam 45. such end portion being provided with a suitable opening, through which the upper portion oll the said screw :3i-l extends, this upper portion ol' the said screw IOC IIC

being provided with a thumb-nut 56 for adjusting the inner or rearward end of the beam 45 vertically, and thereby correspondingly adjusting the forward end thereof, such adjustments being capable of being effected by reason of the described pivotal relation between the post 42 and the said screw-bolt 44.

Disposed transversely of the upper surface of the parallel members 19 and 20 and the slide 25 is a plate 57, provided for its length with a bar 58, to which is secured one or more holders59 for three-cornered files 60, extending forwardly of the machine, the said holders each being provided with a hook 61,

engaging the under side of the bar, (see F ig.

1,) with the threaded stem 62 of the hook adapted to be extended through any one of a plurality of openings 63 in the holders and provided with thumb-nuts 63ZL for tightening the holders upon the bar 58, it being apparent that from this embodiment said holders may be adjusted so as to cause the forward ends of the files to extend more or less beyond l theforward end of the machine. The forward end portions of the three-cornered files 60 are adapted to be received in any selected ones of notches 64, formed'in the upper edge of the guide-plate 65 for said les, this guide-plate being provid ed with hangers 66, having slots at 67 therein in registry with slots 68, formed in other hangers 69, extending from the upper edge of a retaining-plate 70 for the files, by which is meant -a plate to prevent the iiles from slipping out of the notches while being operated to sharpen the teeth of a saw, the said retaining-plate 70 being also preferably (though not essentially) provided with a slot 71, through which extends a screw 72, entering a member 73, the upper surface of the central portion of which is provided with a disk 74, secured in place by a screw 75, entering the said member 73 from the lower edge thereof, (see dotted lines, Fig. 3,) the said disk having rigid therewith a screw-pin 76, which projects upwardly through a segmental slot 77, formed in a half-disk 78, which is rigid with the lower end of a pin 79, which extends upwardly between the sides of a kerf 80, formed in the said beam 45, for a suitable distance from the forward end thereof and secured in place by means of a screwpin 81, extending through the end of the beam at the sides (see Fig. 3) and provided at the free end of the projecting threaded portion thereof with a tightening thumb-nut 82. The said member 73 is of the proper dimensions, and the same has projecting from the outer face thereof near the ends suitable screws 83, each of which extends through one of the sets of slots 67 and 68 and is provided with a thumb-nut 84, by which the retaining-plate 70 may be adjusted to any desired extent with reference to the notches 64 in the guidevplate 65, in conformity with files of different sizes which may be employed in the use of the machine. The up er end of the pin 79 has connected thereto tiie forward end of a springrod 85, the rearward end portion of which is adjustably held in place by a plate 86 on the upper side of the beam 45 and is turned upwardly into a handpiece 87, this spring-rod operating in a sense as a cushioning or tensioning device for the files 60 as they are reciprocated through the guides therefor.

The hereinbefore-mentioned member 4 of the saw-carrier may be moved to any desired extent transversely of the machine by means of a gear-pinion 88, carried at the outer end of a shaft 89, supported in a bearing 90, secured to the side of the supporting-stand 1 and provided at its inner end with an operating-crank 91, the teeth of said pinion being in engagement with the teeth 8 of the said member, it being only necessary to impart motion to the pinion by the crank in an obvious manner.

The inner or rear end of the slide 25 is provided on the under side thereof with a brace 92, which may have pivotal connection with the stand 1.

The adjacent sides of the slide 25 and the parallel members 19 and 20 are provided with a plurality of corresponding holes which when brought into registry may receive the pin 24 at the end of the chain 23, and thereby secure the said members and slide together, either in the position shown in full lines in Fig. l or the position shown in dotted lines in said figure, whenever the vfiles 60 are to be carried to a position to file the teeth of a hand or crosscut saw from one side or the other thereof. To enable the sharpening devices to be shifted to the said positions, the plate 57 and member 73 have pivotally connected to the ends thereof the ends of parallel rods 93, operable in connection with said plate and member, as will presently be explained.

As shown in Fig. 5, the hereinbefore-mentioned adjustable guide and retaining devices for the files may sometimes be substituted by a frame 94, suitably secured in the outer or forward face of the member 73 and carrying thereon one or more adjustable brackets 95, carrying at the outer end thereof a rotatablyadjustable holder 96 for a fiat file (not shown) which may sometimes be employed for certain purposes on certain kinds of saws, the said holder being provided with a yoke 97, directly receiving the file, as well also as a triangular yoke 98, in which a three-cornered file may also be supported in certain instances of use of this particular embodiment of devices referred to.

From the foregoing it will be seen that when the parallel members 19 and 20 and guide 25 have been carried to the positions indicated in full lines in Fig. 2 and the plate 57 and member 73 brought substantially IIO parallel with each other the tiling of a ri saw, for instance, may be expeditiously effected by simply causing the block 4() to be reciprocated through the proper hand-operated devices therefor, it being understood that the pins 24 have been i'irst inserted in the alining openings therefor in order to maintain the said parallel members 19 and 2O and block 25 in practically rigid relation with each other. New for the purpose of e'tlecting the sharpening of the teeth of either a hand or a cross-eut saw from one side or the other, it is necessary to shift the sharpening devices proper-say to the position shown in dotted lines in Fig. 2-and this is carried out by 'Erst removing the pins 24 and then swinging the parallel members in the proper di. ection horizontally, whereupon the slide 25 will move outwardly a short distance in conformity With the movement imparted to the said members, and then the pins 24 are again inserted in diferent alining openings therefor in the parallel members and slide, thus to hold the operative elements of the structure in the position suggested.

It should be mentioned that the slide 25 is guided in its movements by means of pins 99 working in the said mentioned longitudinal slots 21 in the parallel members 19 and 20,. while'it is understood. that the clips 26 on the slide permit of the necessary movements taking place between the slide and the parallel members 19 and 20. The desired adjustments of the movably-connected plate 57 and member '73 are usually e'tl'ected by hand after swinging the parallel members and slide horizontally and before inserting the fastening-pins 24, it being evident that it the said pins 24 are inserted in the alining openings there'tor the plate 57 and the member 73 will be held in desired parallel relationship to each other.

'further explaining the operation of the machine, it may be stated that by proper adjustment of the thumb-nut 56 the tension of the spring 55 may be regulated to cause the iiles to be held to their work at any desired pressure, as will be apparent.

It will be noticed from an inspection of Fig. 2 that the parallel members 19 2O are spaced apart from the slide 25 at their front ends in order to permit the swinging movement shown in dotted lines of the parallel members and the slide.

Having thus described my invention, l claim as new and desire to secure by Letters Patent-- 1. A saw-sharpening machine comprising a supporting-stand, a block mounted for reeiprocation upon the stand, sharpening devices actuated by said block, said sharpening devices en'ibodj' ing a plate pivoted. centrally upon said block and having adjustable tileholders connected therewith.

3. A saw-sharpening machine, comprising a supporting stand, horizontally shilt able parallel members pivoted thereto, said members having` parallel slots therein, a slide located between the members, having pins working in said slots, a block mounted for reeipreeation upon the slide, and sharpening devices actuated b v said block.

4. A saw-sharpening machine, comprising a supporting-stand, horizontally-shil'table parallel members pivoted thereto, said members having parallel slots therein, a slide located between the members, having pins werking in said slots, a block mounted l'or reciprocatioii. upon the slide, and` sharpening devices actuated by said block, the latter being provided with top and bottom. plates moving along the upper and lower surface portions ol' the slide.

5. A saw-sharpening machine, conmrising a support.ing-stand, horizontal parallel members pivotcd. thereto, a slide located between said members, a block mounted lor reciprocation upon the slide, and. sharpening devices actuated by said bleek, said ide being provided. at opposite sides thereol5 with clips, in which said members are m( abljvv guided.

6. A saw-sb.ar]niiing machine comprising a supporting-stanil, sharpening devices in connection with. the stand, cinnprising a rotatable plate, one or more ililes supported thereby, a guide-plate, a retaining member for the tiles, a support tor the two latter elements, and rods movabl' \v connecting said support with said plate.

7. A saw-sharpening machine, comprising a supporting-stand, horizontal parallel members pivoted thereto, a slide located. between said members, a rcciprecable block supported by the slide, sharpening devices actuated b v said block, said. parallel members andv the slide being provided with openings adapted to being brought into registry with each other, and pins held by.' the members tor insertion within the registering (.ipenings, for securing the members and slide together in the diti'erent i Iisitions to which the same may be shilt ed.

S. ln a saw-sharpening machine, a reciproeable bar, a plurality et 'ilc-liel l .\rs, hooks engaging the b ar and having screw-tln'eaded ends traversing openings in the tile-holders, and nuts engaging the scre\\'threaded ends for securing the tile-holders tn the bar.

9. A saw-sharpening machine comprising a supporting-stand, a bleek mounted i'or reeiprocating movement on the stand, [iles eonnected with the block, a longitudinally-exlOO tending beam pivotally mounted upon the I In testimony whereof I have signed my block, a half-disk having a segmental slot and i name to this specification in the presence of connected With the end of the beam, a memv I two subscribing Witnesses.

ber having on the upper surface thereof a JOHN D. MGAULAY. 5 disk provided With a pin Working in the segi Witnesses:

mental slot, and a supporting-plate for the ANGUs FERGUSON, files connected with said member. 1 DONALD J. MCRAE. 

